Classical Composers - Of The 20th Century

My list of the most significant composers of the 20th Century. Listed by age of birth. Claude Debussy (1862-1918) – La Mer 1905. Jean Sibelius (1865-1957) – Symphony No. 5 in E-flat major. 1915 . Ralph Vaughan William (1872-1958) - The Lark Ascending 1914. Sergei Rachmaninoff (1873-1943) – Isle of the Dead 1908. Arnold Schoenberg (1874-1951) - Gurre-Lieder. 1910. Maurice Ravel (1875-1937) - Valses nobles et sentimentales. 1912 Béla Bartók (1881-1945): Music for Strings, Percussion and Celesta. 1936. Igor Stravinsky (1882-1971) -: Le Sacre du printemps 1913 Edgard Varèse (1883-1965) - Ionisation 1931 Alban Berg (1885-1935) – Wozzeck 1924 Bohuslav Martinů (1890-1959) - Czech Rhapsody 1918. Sergei Prokofiev 1891-1953) - War and Peace. Francis Poulenc (1899-1963) – Sinfonietta 1947 Dmitri Shostakovich (1906-1975) – Symphony No. 8 1943 Olivier Messiaen (1908-1992) - Turangalîla-Symphonie 1948 Benjamin Britten (1913-1976) - War Requiem 1962 Witold Lutosławski (1913-1994) - Concerto for Orchestra 1954 György Ligeti (1923-2006) – Atmosphere 1961 Henryk Górecki (1933-2010) - Symphony No 3. “Symphony of Sorrowful Songs” 1976. Alfred Schnittke (1934-1998) - Requiem 1975 NOTE: Some might object, that i claim that Debussy is a primarily 20th Century composer. But some of his most significant works, is from the 20th century as is of value considered the so-called impressionistic period on classical music. And, there are no living composers on the list. That is for another list.